The area of a rectangle is 63 m2 , and the length of the rectangle is 5 m more than double the width. find the dimensions of the
rectangle.
1 answer:
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The group rent 11 river rent tubes and 4 cooler tubes.
Step-by-step explanation:
Rent for river rent tube = $20
Rent for cooler tubes = $12.50
Total spent = $270
Total tubes rented = 15
Let,
x be the number of river rent tube.
y be the number of cooler tubes.
According to given statement;
x+y=15 Eqn 1
20x+12.50y=270 Eqn 2
Multiplying Eqn 1 by 20
Subtracting Eqn 2 from Eqn 3
Dividing both sides by 7.5
Putting y=4 in Eqn 1
The group rent 11 river rent tubes and 4 cooler tubes.
Keywords: linear equations, subtraction
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Answer:
Value of the test statistic,
Step-by-step explanation:
Null hypothesis,
Alternative hypothesis,
Sample mean,
Sample size, n = 110
Standard deviation,
Significance level,
The value of the test statistics is given by the formula: